Locking Folders without any third party software

Locking Folders without any third party software 

Hi guys<<<<

Back with a interesting trick>>>>>>>>

There are some folders in the computer which contain some imp. information,,,,, so here is the trick to lock these folders without any software...

Consider you want to lock a folder named in your E:\, whose path is E:\.
Now open the Notepad and type the following

How can we lock pdf files and how to unlock it?

 How can we lock pdf files and how to unlock it?

Password protection of your PDF file ensures that the PDF can only be opened by the intended recipient of the file. Password protection can also be used to prevent users from printing or editing the document. These settings can be further tweaked to allow only low resolution printing, and varying degrees of editing.

METHOD 1
To password protect your PDF document in Adobe Acrobat Reader,
go to Advanced > Security > Encrypt With Password.
A prompt will appear asking if you are sure you want to change the security settings. Click on Yes.